Lagom: Add a simple IPC client and server for host-side testing

Add LibIPC to the Lagom build, and also implement two little test apps
so we can run IPC tests on other systems.

Lagom/CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required (VERSION 3.0)
 project (Lagom)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -Wall -Wextra -Werror -std=c++17 -fPIC")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -Wall -Wextra -Werror -std=c++17 -fPIC -g")
 
 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wconsumed")
@@ -11,8 +11,9 @@ endif()
 
 file(GLOB AK_SOURCES "../AK/*.cpp")
 file(GLOB LIBCORE_SOURCES "../Libraries/LibCore/*.cpp")
+file(GLOB LIBIPC_SOURCES "../Libraries/LibIPC/*.cpp")
 
-set(SOURCES ${AK_SOURCES} ${LIBCORE_SOURCES})
+set(SOURCES ${AK_SOURCES} ${LIBCORE_SOURCES} ${LIBIPC_SOURCES})
 
 include_directories (../)
 include_directories (../Libraries/)
@@ -21,3 +22,11 @@ add_library(lagom ${SOURCES})
 add_executable(TestApp TestApp.cpp)
 target_link_libraries(TestApp lagom)
 target_link_libraries(TestApp stdc++)
+
+add_executable(SimpleIPCClient SimpleIPCClient.cpp)
+target_link_libraries(SimpleIPCClient lagom)
+target_link_libraries(SimpleIPCClient stdc++)
+
+add_executable(SimpleIPCServer SimpleIPCServer.cpp)
+target_link_libraries(SimpleIPCServer lagom)
+target_link_libraries(SimpleIPCServer stdc++)

Lagom/SimpleIPC.ipc

@@ -0,0 +1,3 @@
+endpoint Simple {
+ ComputeSum(i32 a, i32 b, i32 c) => (i32 sum)
+}

Lagom/SimpleIPCClient.cpp

@@ -0,0 +1,39 @@
+#include <LibCore/CEventLoop.h>
+#include <LibCore/CTimer.h>
+#include <LibCore/CoreIPCClient.h>
+#include <stdio.h>
+#include "SimpleEndpoint.h"
+
+class SimpleIPCClient : public IPC::Client::ConnectionNG<SimpleEndpoint> {
+ C_OBJECT(SimpleIPCClient)
+public:
+ SimpleIPCClient()
+ : ConnectionNG("/tmp/simple-ipc")
+ {}
+
+ virtual void handshake() override {}
+
+ i32 compute_sum(i32 a, i32 b, i32 c)
+ {
+ return send_sync<Simple::ComputeSum>(a, b, c)->sum();
+ }
+};
+
+int main(int, char**)
+{
+ CEventLoop event_loop;
+
+ SimpleIPCClient client;
+
+ CTimer timer(100, [&] {
+ i32 sum = client.compute_sum(1, 2, 3);
+ dbg() << "Sum: " << sum;
+ });
+
+ CTimer kill_timer(5000, [&] {
+ dbg() << "Timer fired, good-bye! :^)";
+ event_loop.quit(0);
+ });
+
+ return event_loop.exec();
+}

Lagom/SimpleIPCServer.cpp

@@ -0,0 +1,40 @@
+#include <LibCore/CEventLoop.h>
+#include <LibCore/CTimer.h>
+#include <LibCore/CoreIPCServer.h>
+#include <LibCore/CLocalServer.h>
+#include <stdio.h>
+#include "SimpleEndpoint.h"
+
+class SimpleIPCServer final :
+ public IPC::Server::ConnectionNG<SimpleEndpoint>,
+ public SimpleEndpoint {
+
+ C_OBJECT(SimpleIPCServer)
+public:
+ SimpleIPCServer(CLocalSocket& socket, int client_id)
+ : ConnectionNG(*this, socket, client_id)
+ {
+ }
+
+ virtual OwnPtr<Simple::ComputeSumResponse> handle(const Simple::ComputeSum& message)
+ {
+ return make<Simple::ComputeSumResponse>(message.a() + message.b() + message.c());
+ }
+};
+
+int main(int, char**)
+{
+ CEventLoop event_loop;
+
+ unlink("/tmp/simple-ipc");
+ CLocalServer server_sock;
+ server_sock.listen("/tmp/simple-ipc");
+ server_sock.on_ready_to_accept = [&] {
+ auto* client_socket = server_sock.accept();
+ ASSERT(client_socket);
+ static int next_client_id = 0;
+ IPC::Server::new_connection_ng_for_client<SimpleIPCServer>(*client_socket, ++next_client_id);
+ };
+
+ return event_loop.exec();
+}